Brick-machine



(No Model.)

W. THAISON.

BR IGK MACHINE.

Patented Nov. 23, 1886.

INVENTOR ATTORNEYS.

N. PETERS. Pnuwmhu n hm. Wasmnglnn, D. c.

UNITED STATES PATENT OFFICE.

WVILLIAM THAISON, OF AUSTIN, TEXAS.

BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 353,095. dated November23, 1886.

Application filed January 7, 1886. ScrialNo.1S7,849. (No model.)

T0 aZZ whom it may concern.-

Be it known that I, WILLIAM Tnnrson, of Austin, county of Travis, Stateof Texas, have invented a new and Improved Brick-Machine, of which thefollowing is a full, clear, and eX- act description.

The object of my invention is to provide a new and improved brickmachinewhich is simple in construction, Compact, occupying very little space,and produces a large number of bricks in a very short time.

The invention consists in the construction and combination of parts anddetails as hereinafter described, and then specifically claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a cross-sectional elevation of my improved brick-machine.Fig. 2 is a sectional plan View of the same on the line as m, Fig. 1.

The frame of the machine is composed of the four uprights A and theconnecting crossbraces B, united at the center by the neck 0, in whichrevolves the heavy vertical shaft D, suitably stepped at its lower end.On the collar E on the shaft D the mold-wheel F rests, and is keyed torevolve with said shaft. Said mold-wheel is provided with six, eight, ormore radial mold-cavities, G, in its upper surface, which cavities areopen at the top and bottom, and in each cavity is closely fitted aplunger, H, provided with two downwardlyprojecting arms, I, betweenwhich a roller, J is mounted to revolve on the shaft K, held in thelower ends of the arms I, and passed through the vertical guide-slots Lin the lower parts or flanges, M, of the mold-Wheel.

The plunger-arms I are held from sidewise movement by lateral guide pinsor projections N, resting against the flanges M on either side.

The rollers J run on the cam-ring O on the base 1? of the machine, whichcamring is of varying height, so that the rollers running over it moveup and down and impart said motion to the plungers H in themold-cavities G. c

Each mold-cavity has a steel lining, G, and the plunger therein a steeltop; and at each cavity, at the inner side thereof, is hinged a door, Q,fitting closely within said cavity, and having a transverse rib, Q, onits upper surface, for a purpose hereinafter set forth.

The fixed hinge-lugs It of each door-hinge have vertically-slotted eyesfor the hinge-pin, so as to allow a slight vertical movement of the doorout of the mold-cavity, and one-- and extends over the top of themold-wheel,

thelength of said arm being equalto about onefourth of the circle. Tothe swinging end of said arm the rod Vis secured, which is passedthrough an aperture in the cross-piece B, and has a nut screwed'on itsouter end, thus allowing an upward movement of the arm T, but checkingits downward movement. On the swinging end of said arm T, beyond the rodV, is formed the head \V, between which and the cross-piece B a powerfulspiral spring, a, is held, which presses the arm T on the doorribs Q,and can be adjusted to keep the doors closed against normal pressurefrom below, and yet yield and relieve the machine from undue strain whenan excess of clay has been placed in a cavity, G. Instead of the spiralspring a, any other suitable form may be used, as desired. On the lug Uof the frame a camrod,b,is secured,which strikes the doors L and swingsthem down to close the mold-cavities.

The clay is placed upon the hopper or platform Z, so that it can beshovcled into the mold-cavities, and the surplus clay is removed fromeach cavity to that succeeding by the scraper 0, preferably of sheetmetal, riveted to the under part of the scraper-frame (2, formed of tworadial portions and aninner segmental part, the radial extensions beingsecured at their outer ends to the standards A. The

scraper or knife 0 is slightly curved at its lower downward to themoldwheel, to keep thesurplus clay from clogging the doors. The camringis lowest at the place where the cavities are filled, and highest ashort distance beyond the door of the same and swings it down in place,and then the doors pass under and are kept in place by the presser-armT. From the time each door is held in position by the presser-arm thecorresponding plunger, H, is raised by its roller running up the inclineof the cam-ring, and the clay, &c., in the moldcavity are graduallycompressed, the pressure being greatest below the spring a, and thecamring being of the required height at that point to give the brick theproper size and shape. As the mold-cavities pass beyond the end of thepresser-arm the hinge shanks or levers R strike the cam projection S,and the pressure being removed thereby swing open the doors, allowingthe bricks, raised out of their cavities on account of the increasedheight of the camring, to be removed and carried away. The plungers thenimmediately descend, and when at their lowest point are at the hopper orplatform S to receive afresh charge, and so on. For each revolution asmany bricksare made as there are mold-cavities in the mold-wheel, thesecavities and their plungers being of any shape, according, to that ofthe brick desired. The height of the cam-ring at the place of filling isregulated so as to insure a proper charge for the molds, to give thebricks when compressed the required size; but as clay is of varyingcomposition the charge is not always exact, and hence I provide thespring-acted presser arm to relieve the machine from strains, as stated.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. In abrick-machine, the combination,with amold-wheel mounted to revolve in the horizontal plane and provided withmold-cavities, of a plunger in each cavity, lateral guide-pins on thelower end of the plunger and resting against the lower parts of themold-wheel, a shaft mounted on thelower end of each plunger and passedthrough vertical guide-grooves in the said lower parts of themold-wheel, a roller on each shaft, and a cam-ring on which the rollersrun, substantially as herein shown and described.

2. In a brick-machine, the combination,with a mold-wheel mounted torevolve in the horizontal plane and provided with mold-cavities, of adoor for each cavity, hinged on the top of v the mold-wheel, each doorbeing provided with a central transverse rib and its hinge-lug with alever arm or shank, and of cams acting on the doors and theirhinge-levers for raising the doors for swinging them down on the top ofthe wheel, substantially as herein shown and described.

3. In a brick-machine, the combination, with a rotary mold-wheelprovided with mold-cavities, of a movable plunger in each cavity, a doorfor each cavity hinged on the mold-wheel, and a curved spring-actedpresser-arm ar ranged to act upon the hinged doors, substantially asspecified.

4.. In a brick-machine, the combination, with a mold-wheel mounted torevolve in the horizontal plane and provided with mold-cavities, of avertically-movable plunger in each cavity, a door for each cavity hingedon the top of the wheel, the hinge plate or lug attached to themold-wheel being slotted to allow a vertical movement of the hingepin, acurved arm pivoted over the top of the mo1d-wheel and extending overpart of the same, and a spring acting on the swinging end of said curvedarm, substantially as herein shown and described.

5. In a brick-machine, the combination,with a mold-wheel mounted torevolve in the horizontal plane and provided with a series of.mold-cavities, of a plunger in each cavity, a door for each cavityhingedon the top of the wheel, so as to allow of a slight vertical movement, acurved arm pivoted above the moldwheel and extending over part of thesame, he rod V, connected with the swinging end of said arm and passedthrough the top of the frame of the machine, and of a spiral springresting on the head on the end of the curved arm, substantially asherein shown and de scribed.

6. In a brick-machine, the combination,with a frame and a mold wheelmounted to revolve in the horizontal plane andprovided with a series ofmold-cavities, of a plunger in each cavity, a door for each cavityhinged on the top of the mold-wheel and adapted to move vertically ashort distance when swung down, an arm extending over part of the wheel,which arm is acted upon by a spring, and of a scraper secured to theframe of the machine and projecting over the cavities of the mold-wheel,substantially as herein shown and described.

7. In a brick-machine, the combination,with the frame-uprights A and thehorizontallyrevolving mold-wheel F, having mold-cavities G, of thescraper-frame (Z, having radial and segmental parts, and secured at itsouter ends to the standards A, and of the scraper 0, se-

cured on the radial and segmental parts of different heights, on whichring the plungerthen still farther upward beyond the presser r0 rollersrun, a resser-arm extending over part to eject the bricks, and are thenmoved down of the top of the wheel and acted upon by a toward thehopper, substantially as herein spring, and of a hopper for receivingthe clay shown and described.

5 before it is delivered upon the mold-wheel,

the height of the cam-ring being greatest a WILLIAM THAISON' shortdistance beyond the presser, and lowest Witnesses: at the hopper,wherebythe plungers are grad- JAMES FORD, ually moved upward toward thepresser, and H. P. N. GAMMEL.

